CH.1 Matter and Measurement PDF

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Supplemental practice worksheet...

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Chapter 1: Matter and Measurement 1. Define Chemistry:

2. Define the following -

Atoms:

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Elements:

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Compounds:

3. Organize the following from smallest to biggest: -

Mixture of elements and a compound

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Molecules of an element

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Atom

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Molecules of a compound

4. List the 3 classifications of matter and their properties a. b. c.

5. List 3 types of chemical changes i) ii) iii)

6. Define and List 3 Intensive Properties i) ii) iii) - Intensive Properties:

7. Define and List 3 Extensive Properties i) ii) iii) - Extensive Properties:

8. Physical Changes vs. Chemical Changes/ Reactions -

Physical =

-

Chemical =

 Make sure you know how to do temperature conversions! K= C + 273 F = (9/5C) + 32 C = 5/9(F-32) 9.

Accuracy Vs. Precision -

Accuracy:

-

Precision:

Significant Figures -

Always count non-zero integer Leading zeros do not count Zero in middle does count Trailing zero is significant only if there is a decimal When multiplying/dividing, use value with fewest sig figs When adding/subtracting, use vale with fewest decimal places

Practice: (tip: if you’re stuck, putting a number in scientific notation helps!) 1. 9,238

2. 1.0075 3. 107.0 4. 25,000 5. 0.00045 Unit Conversions 1. 3.14 m2 to in2 (1 meter = 1.09361 yds.)

2. 43 mi/hr to km/s (1 km = 0.621371 mi)

3. A space ship is traveling 587,685 km per hour. How many miles does the spaceship travel in 4.00 days? 1.00km = .621377 mi

4. The density of an unknown metal is 8.32 g/cm3. The mass of that sample is 2.84 lbs. The sample is placed in water. What is the volume of the water that is displaced when the sample is added? 1.0 g = 0.0022 lbs; 1 cm3 = 1 mL

5. A home is experiencing methane leaks due to the practice of fracking near by. The concentration of methane in the home is 46.0 micrograms/meters cubed. How many grams of methane are there in a room with the following dimensions: 10.0 ft x 13.0 ft x 9.00 ft. 1 meter = 3.28ft...